Rename Line Patterns

Description

The following piece of code retrieves all line patterns matching a naming prefix and modifies their name. This code is an evolution of Matthew Nelson's example. Thanks Matt!

Use at your own risk. Share your thoughts.

		public void renameLinePatterns()
		{
			//Get the current document

			UIDocument uidoc = this.ActiveUIDocument;
			Document doc = uidoc.Document;

			//Get all line patters starting with PREFIX

			var collector = new FilteredElementCollector(doc)
				.OfClass(typeof(LinePatternElement))
				.Where(i => i.Name.StartsWith("PREFIX")).ToList();

			//Add them to a list of ids - this is redundant but makes this code reusable for other purposes

			List<ElementId> ids = new List<ElementId>();
			for (int i = 0; i < collector.Count(); i++)
			{
				ids.Add(collector[i].Id);
			}

			//Start the transaction that will modify your document

			using(Transaction t = new Transaction(doc,"Rename LinePatterns"))
			{
				t.Start();

				try
				{
					foreach (ElementId id in ids)
					{
						//Get the line pattern element

						LinePatternElement lpe = doc.GetElement(id) as LinePatternElement;
						if (lpe != null)
						{
							//Get the line pattern name

							string lpeName = lpe.Name;

							//Modify the name of the line pattern

							lpe.Name = lpeName + "-FOO";
						}
					}

				}
				catch (Exception)
				{
					t.RollBack();
					TaskDialog.Show("Rename LinePatterns","Renaming failed");
					return;
				}
				t.Commit();
				TaskDialog.Show("Rename LinePatterns","Renaming complete");
			}
		}

Platform

Revit.

Type

Revit API Macro.